You have to wonder what drove people to collaborate for 15 centuries in building this construct.

Could there be an amount FOMO involved as in if you do not work with us then something will happen?

Almost all religions have Gods practicing forms of punishment and promises of heavenly rewards. Certain offering customs of the Aztecs were extremely cruel to people.

Then we also know people came even from Europe traveling 2000 km to visit this place for a specific event. There must have been a real exciting opportunity for spectators to experience when traveling such a vast distance. Just cremating dead bodies of local people that naturally died in that period wouldn't be interesting & controversial enough to attend.

Is Stonehenge a ritual site where people where cremated alive as a punishment for not doing enough work in building monument?